of this, this may -- irony of this, this may lead to more emissions of carbon and methane into the environment than if we hadn't done these regulations. gregg: and higher costs for consumersesome. >> no doubt about that. the biggest concern is not so much prices, but they will be affected, it's jobs. a lot of people in the coal mining industry, a lot of people in the manufacturing sector, and these are union jobs, by the way, gregg. very worried about what's going to happen to their job if we increase the prices and put, you know, one of the effects of this will be, essentially, to put coal mining out of business. gregg: all right. stephen moore, as always, thank you very much. >> thank you, gregg. gregg: in the meantime, new numbers showing president obama's approval rating has taken a serious dive since his re-election. coming up, we're going to speak with brit hume about what's really behind this decline. >>> plus, the defense in the george zimmerman trial getting its first full day right now on the witness stand a former coworker of zimmerman. the trial is streaming in full on foxnews.com.